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  • ThesisItemOpen Access
    ICHTHYOFAUNAL DIVERSITY OF PHOPHAL, OZAT-II AND HIRAN-II RESERVOIRS OF SAURASHTRA, GUJARAT
    (JAU,JUANAGDH, 2020-11) VYAS UPASANA DHIRAJLAL; Dr. A. Y. DESAI
    Ichthyofaunal diversity, Reservoirs, seasonal variation, physico-chemical parameters, diversity index, Saurashtra region
  • ThesisItemOpen Access
    “DISTRIBUTION AND DIVERSITY OF ECHINODERMATA FROM SIKKA COAST OF GUJARAT”, T3222
    (JAU JUNAGADH, 2020-12) KATARIYA KINJAL RAMBHAI, (Registration No - 2030318008); H. K. KARDANI
    he present study on distribution and diversity of Echinodermata from Sikka coast of Gujarat were carried out during September-19 to February-20. During the study period total 159 echinoderms were recorded and the dominant class were Holothuroidea and Asteroidea. During the research time, a total of eight species belonging to eight families and seven orders were observed. Echinoderms Viz., Astropecten sp., Aquilonastra burtoni, Anthenea rudis, Euantedon sp., Salmacis bicolor, Holothuria (Lessonothuria) pardalis, Ophioplocusimbricatus and Ophiocomella sp. were recorded during the study period. During the research period, highest Shannon diversity index recorded in January at GSFC (H’) - 1.709 while at Vador highest Shannon diversity index was reported in December - 1.82. Highest evenness index (J’) 0.8415 and 0.9391 were recorded in February at GSFC and VADOR respectively. Highest Margalef species richness indexes (d) 2.216 were observed in January at GSFC while at Vador highest value 0.9391 observed in December. Correlation of number of species with water quality parameter were carried out and negative correlation was observed among temperature and number of species and positive correlation was observed in pH, Salinity, Dissolved oxygen, and Total suspended solids Vs number of species. The range of different water quality parameters were as: Temperature (28⁰C to 33⁰C), pH (7.9 to 8.14), Salinity (32 ppt to 34 ppt), DO (7.3 mg/L to 8.2 mg/L), Total suspended solids (1.2 mg/L to 4.6 mg/L).
  • ThesisItemOpen Access
    “STUDY ON TRACE METAL CONCENTRATION IN SEAWEED FROM VERAVAL COAST, GUJARAT”, T3149
    (JAU JUNAGADH, 2020-10) GADHIYA SONAL JESALBHAI, (Registration No - 2030318007); D. T. VAGHELA
    The purpose of this study was to investigate the concentration levels of metals in different species of the main three marine seaweeds divisions with physico-chemical parameter from the Veraval coastal area, Gujarat. The divisions included Chlorophyta-green seaweeds (Ulva reticulata, Caulerpa sertularioides), Phaeophyta Brown seaweeds (Padina tetrastromatica, Cystoseira indica) and Rhodophyta-red seaweeds (Gelidiella acerosa, Gracilaria corticata). The maximum concentration of Cd recorded in Caulerpa sertularioides (13.62 ppm) in pre-monsoon season in March. In the case of Pb, the highest concentration was found in Caulerpa sertularioides (46.45 ppm) in pre-monsoon in March. According to reveals data, the maximum Zn concentration was found in Gracilaria corticata (455.17 ppm) in September during the monsoon season and highest Fe concentration was found in Caulerpa sertularioides (9275.53 ppm) in post-monsoon season during the month of October. As per the result, the general trend of metal concentration in all the seaweed species in the present study was found in the following order: Fe > Zn > Pb >Cd. The Fe concentration high in all six seaweed species due to the industrial activities and seaweed abilities are essential for biomagnifying from the surrounding environment that leads to the emergence of high Fe concentration in seaweed. The seasonal sequence of accumulation of trace metal is pre-monsoon >post-monsoon >monsoon. Among all seaweeds, Caulerpa sertularioides could be effectively capable to uptake the metals in Veraval coastal area. According to result, green seaweed has more ability to uptake of metal as compared to red and brown seaweed. This indicates that seaweeds are generally considered as the best bioindicator of aquatic bodies for nutrients as well as metals. Seasonal variation in water quality was investigated as highest and lowest values followed by Temperature (32.4°C, 24.6°C), Salinity (35.40, 29.30 ppt), pH (8.3, 7.1) and Dissolve Oxygen (7.7, 5.4 ppm) respectively.
  • ThesisItemOpen Access
    ISOLATION AND IDENTIFICATION OF POTENTIAL PROBIOTIC BACTERIA FROM THE GUT OF SELECTED FRESHWATER ORNAMENTAL FISHES 3065
    (JAU, JUNAGADH, 2020-06) CHOPARA KRISHNA KARSHANBHAI; S.I. YUSUFZAI
    he study was conducted to isolate and identify probiotic bacteria from the gut of Xiphophorous helleri and Betta splendens. For isolation of gut microbes five fishes of each variety were collected. Eleven bacterial strains were isolated from the freshwater ornamental fishes. The eleven group represented by isolates of C1, C2, C4, C9, C11, C13(a), C13(b), C14, C19, FSB and FSS were selected for biochemical tests. Bacteria isolated from the gut of Xiphophorous helleri were identified as Enterobacter, Enterococcus faecalis and Bacillus subtilis by observing their colony morphology, physiological and as well as some biochemical characteristics. Microscopically they were Gram-negetive, irregular or round shaped, non- motile and few bacterial strains were catalase negative. Bacillus cereus was isolated from Betta splendens. It was Gram-positive and catalase-positive. From this study, it was concluded that the eleven bacteria isolated from intestine could be potentially developed for their use as probiotic bacteria in fish feeds.
  • ThesisItemOpen Access
    PREPARATION AND CHARACTERIZATION OF FUNCTIONAL OATS COOKIES FORTIFIED WITH FISH PROTEIN CONCENTRATE AND PLANT EXTRACTS 2956
    (JAU, JUNAGADH, 2019-08) MORI MIRABEN RANVIRBHAI; D.V. BHOLA
    Recently, the demand for foods and beverages, which improves health or proves beneficial, has been intensified. Baked cookies can act as an important vehicle carrying bioactive compounds in the field of functional foods. The use of biologically active compounds from plants as functional ingredients in food is gaining interest. Two different experiments were conducted using oats cookies prepared with different percentage of fish protein concentrate (2%, 4%, 6%, 8% and 10%) and plant extracts, orange peel (O) and cactus fruit extract (C). The aim was to find out the best concentration of FPC and effect of bioactive phyto-chemical of plant extract for enhanced shelf life and keeping quality at room temperature. Oats cookies prepared with 2 % FPC had the highest sensory score for overall acceptability. Oats cookies were prepared with 2 % FPC and different percentage of plant extracts. Treatments included, C (control, without plant extract), C1 (cactus fruit extract 1%), C2 (cactus fruit extract 2%), C3 (cactus fruit extract 3%), C10 (cactus fruit extract 10%), O1 (Orange peel extract 1%), O2 (Orange peel extract 2%), O3 (Orange peel extract 3%) and O10 (Orange peel extract 10%). The proximate composition (protein, fat, moisture, Ash), instrumental analysis (texture, color and spread ratio), biochemical (pH, TMA, TVBN ii and TBA), microbiological (TPC, yeast and mold count) and sensory test were done to access the quality of cookies at 15 days interval during 90 days at room temperature. Cookies fortified with 10% cactus fruit extract performed best, followed by cookies fortified with 10 % orange peel extract. Based on the results, it is concluded that the product had good shelf life of 3-4 months at room temperature with high acceptability.
  • ThesisItemOpen Access
    STUDY ON EFFECT OF DIFFERENT OPEN SUN DRYING METHODS AND PACKAGING ON THE QUALITY OF DRY SALTED LIZARD FISH (Saurida tumbil) 2942
    (JAU, JUNAGADH, 2019-08) TARAL PRAVINKUMAR VAGHABHAI; D.V. Bhola
    Investigations were carried out on Effect of Different Open Sun Drying Methods and Packaging on the quality of dry salted Lizard fish (Saurida tumbil) during the year 2018-19 at College of Fisheries, Junagadh Agricultural University, Veraval. Result of Six months analysis indicate that drying and packaging method had more effect on quality and shelf life of dry salted lizard fish. Rack dried (R1) with their treatments D1 gunny bag, D2 200 LDPE air packaging, D3 200 LDPE vacuum packaging (R1D1, R1D2, R1D3) and mat dried (M1) with their treatments M1D1, M1D2, M1D3 salted dried fish value of moisture, protein ash and total lipid as (R1) 18.62 ± 0.05 %, 56.35 ± 0.05 %, 19.44 ± 0.02 % , 5.48 ± 0.01%, (M1) exhibited 25.16 ± 0.02%, 53.13 ± 0.02%, 17.57 ± 0.05%, 5.02 ± 0.02% bio-chemical such as TMA-N, TVB-N, FFA , PV, TBA were 3.2 ± 0.01%, 35.12 ± 0.05 % , 1.5 ± 0.002%, 1.5 ±0.02%, 1.16 ± 0.01% and 7.58 mg %, 51.2 %, 38.22, 1.64 m.equ./kg %, 1.5 %. Microbiological TPC, THC, TFC count were 3.36×105 , 0, 3.15×105 and 3.58×105 , 0, 3.35×105 log cfu/g, in R1 and M1 respectively. (R1D3) was good in all treatment. Rack dried sample was superior to mat dried and vacuum packaging is best than air packaging and gunny bag in terms of all parameter. Dry fish marketing is the only employment opportunity for local fisher women and it is a good source of protein for people in the rural areas.
  • ThesisItemOpen Access
    “STUDY OF SCALE SIZE, SHAPE AND SURFACE MICROSTRUCTURE IN SELECTED GENUS UNDER SCANNING ELECTRON MICROSCOPE ALONG VERAVAL HARBOUR, GUJARAT” 2931
    (JAU, JUNAGADH, 2019-07) TANDEL RUTVIKKUMAR PRAVINBHAI; D. T. Vaghela
    In the present study, an approach is made for studying of detail structures of scales from 36 species, belonging to 24 families and 10 orders of marine teleost fishes of Arabian sea with the use of Scanning electron microscope (SEM). The several scale characters i.e., focus area, inter-radial space, number and type of radii, size of lepidonts, type of cteni, inter-radial space is considered vital for the discrimination of these species. From each fish species, scales are taken from the three different body regions i.e., head, belly and caudal region in order to analyse the variation in the microstructure of scales in details. The scale is divided into anterior, lateral and posterior field. Various quantitative measurement i.e., J indices for width, J indices for length measured for discrimination of similar genus species. The scale size and J indices play a valuable tool for species discrimination. Based on evidences in the present study we can accomplish that (i) comparative study of scale morphology and its microstructure can be used to understand taxonomy of teleost species (ii) scale morphology and microscopic structures of scales are important for discrimination and identification of similar genus species.
  • ThesisItemOpen Access
    “LENGTH - WEIGHT RELATIONSHIP AND BIOLOGY OF Wallago attu (FRESH WATER SHARK) FROM BHADAR RESERVOIR’’ 2923
    (JAU, JUNAGADH, 2019-08) HARI PRASAD; A. Y. DESAI
    The present study on Wallago attu was conducted Bhukhi village Dhoraji Taluka of Rajkot district of Gujarat at Bhadar reservoir. Biological information on W. attu such as length-weight relationship, food and feeding habits, sex ratio and fecundity were collected from the Bhadar reservoir gear used by giilnet. The maximum size 109.5 cm was founded during investigation of research. The length weight relationship for males and females were not significant. The condition factor female was higher than male. The overall sex ratio was 1:1.008 and the females dominated in the population during entire investigation. All Maturity stages where founded during study period. The spawning percentage was higher during in month of August because only one breeding season attained by W. attu. The absolute fecundity of W. attu ranged from 16565 – 29883. The annual average ova diameter was 1.38 mm (range 1.1 – 1.9 mm). The GSI of the species was higher in month of August. The Gastrosometic index (GaSI) of the male and female was higher in February and September because it directly relationship between GIS. During breeding season the size of gonad was high so its preferred less food. The percentage of empty stomachs was the highest (26.67%) in July, and the percentage of full stomachs was highest (50%) in February and absent in month of breeding season. The Chanda nama and M. rosenbrgii were the favorite food of W. attu are because it founded to entire season. Morphometric parameters with total length show positive allometric growth for W. attu. The water quality parameter like Temperature, pH, DO. Alkalinity and Hardnees it directly or indirectly relation between them and survivability of W. attu fish. Suggestion to reduce catch of small size fishes for future sustainability and re recruitment.
  • ThesisItemOpen Access
    “EFFECT OF SEAWEED Caulerpa spp. AS DIETARY INGREDIENT ON GROWTH PERFORMANCE AND SURVIVAL OF Labeo rohita (Hamilton, 1822) FRY” 3019
    (JAU, JUNAGADH, 2019-10) SOLANKI RAVINA DHIRUBHAI; N. H. JOSHI
    The study was conducted to evaluate the efficacy of seaweed (Caulerpa spp.) as feed additive on specific growth rate, weight gain, survival and some biochemical parameters in rohu (Labeo rohita) fry for 60 days. The five experimental diets were prepared by adding Caulerpa spp. at 0% (control diet), 3% (T1), 6% (T2), 9% (T3) and 12% (T3) inclusion level. Total 150 numbers of rohu (Labeo rohita) fry were randomly distributed into five treatments (control + treatment), each in three replicate. Sampling was carried out at every 15 days to monitor growth performance and to adjust rations. The water quality parameters viz. DO, alkalinity, pH and temperature was found in the permissible range during entire experimental period. Based on the results, there was a significant difference (P>0.05) reported in weight and length gain of fry fed with the different feeds during a period of 60 days. Fishes fed with T2 (Treatment) diet showed the highest mean weight gain, specific growth rate (SGR) and protein efficiency ratio (PER) than those fed with other diets. Lowest feed conversion ratio (FCR) and highest specific growth rate (SGR) SGR was obtained in T2.In the proximate analyses of the fish carcass the protein content was significantly highest in T2 compared to other treatments. The fat content was significantly higher in T4. From the findings of the current study it can be concluded that seaweed Caulerpa spp. is a potential protein rich basal ingredient and can be used to as good feed additive if used 6% level in the diets of rohu (Labeo rohita) fry without compromising its growth performance.